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How do I fix a protocol adapter error?
Set the Oracle system ID (SID) to C:>set oracle_sid=ORCL. Next, run the Net Start command (C:>net start oracleserviceORCL). This should resolve the ORA-12560 error in this situation.
How do I fix the TNS protocol adapter error in Oracle 11g?
How to Fix ORA-12560: TNS: Protocol Adapter Error
- Make sure the windows service is up and running.
- Make sure your ORACLE_SID is set to the instance name you’re trying to connect to. If either one or two are not correct you will get the error as seen below.
Which is an Isql * command?
isql is a command line tool which allows the user to execute SQL in batch or interactively. It has some interesting options such as an option to generate output wrapped in an HTML table. iusql is the same tool with built-in Unicode support.
What are the parameters of a listener.ora file?
Example 7-1 shows a listener.ora file for a listener named LISTENER, which is the default name of the listener. This section lists and describes the listener.ora file parameters. Listener configuration parameters fall into the following categories:
Where is the listener configuration stored in Oracle?
Listener configuration, stored in the listener.ora file, consists of the following elements: Protocol addresses that the listener is accepting connection requests on Dynamic service registration, a feature of Oracle9i and Oracle8, eliminates the need for static configuration of supported services.
Why is the Oracle 18c listener unable to start?
Starting the listener through services results in an error saying the OracleOraDB18Home1TNSListener service on local computer started then stopped. TNS-00515: Connect failed because target host or object does not exist 64-bit Windows Error: 49: Unknown error
Why is my Windows database saying no listener?
Question: I’m getting a TNS “no listener” error on my Windows Oracle database when trying to connect: How do I fix a “no listener” error? Answer: The TNS no listener errors indicate that the Windows listener service is not accepting connections or the service is not running.